Overview

overview

10

Static

static

3

860e50.exe

windows7-x64

10

860e50.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    JaffaCakes118_a30398ce3dc4fd04ddacb9408a136bc848e3a88ea98a486a93f4e7dc9650b218

  • Size

    75KB

  • Sample

    241229-av1yqswqat

  • MD5

    1541cc2bb11801c1d289ff66c4c315b9

  • SHA1

    53852e362ce74f1253836c0114203bfc23192c87

  • SHA256

    a30398ce3dc4fd04ddacb9408a136bc848e3a88ea98a486a93f4e7dc9650b218

  • SHA512

    bf7b562ff504686a2af164b8c9514d3c0830dcd24656a4c74837919ee5e4ab4bd7d74e30741d96bd5a9b663f82fdbb93fd98d24a5c9f634edc0ea54746222ae9

  • SSDEEP

    1536:1ihto4iMb+gopaC9Ne3dotyFzuZ71x+b3N+0bMHcqNLpI:EH/bqv9NmdowFziP+LNmHrI

Score
10/10
ryukcredential_accessdefense_evasiondiscoveryexecutionimpactpersistenceransomwarestealer

Malware Config

Targets

    • Target

      860e50.bin

    • Size

      196KB

    • MD5

      484a2bcb1335ac97ee91194f4c0964bc

    • SHA1

      ad11ed52ab33ad05eb9b1e9ade134ca1348acc81

    • SHA256

      40b865d1c3ab1b8544bcf57c88edd30679870d40b27d62feb237a19f0c5f9cd1

    • SHA512

      6e61612bd29425c5ab9b648fa83bc2d8616071247f8659aa316ab9d4adde0a9ceb9301737bb4216db223dfdd371106da75463f6d7e3a88e1c4cdd6c821f3935f

    • SSDEEP

      3072:08CBJvnmQ4VZQY83XS/cIVVEn+GNi4qRGE95jq:RWJOzT+K5Vc+oujq

    Score
    10/10
    ryukcredential_accessdefense_evasiondiscoveryexecutionimpactpersistenceransomwarestealer

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Ryuk family

      ryuk

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Renames multiple (3408) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

      credential_accessstealer

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Direct Volume Access

1
T1006

File and Directory Permissions Modification

1
T1222

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

1
T1112

Credential Access

Credentials from Password Stores

1
T1555

Windows Credential Manager

1
T1555.004

Discovery

Browser Information Discovery

1
T1217

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2
T1490

Tasks